Chapman did not retire a batter in the bottom of the ninth after Jay Bruce gave the Reds a lead in the top of the inning. The result was a crushing 4-3 walk-off loss to the Arizona Diamondbacks before a crowd of 30,567 at Chase Field.

It was Chapman's first blown save since May 19. The runs are the first he's allowed since then as well.

Chapman allowed a single to Paul Goldschmidt. The ball went off Joey Votto's glove and into right field. Chapman showed a bit of frustration after the play.

"You can't do those things," Baker said. "Joey usually catches that ball. We were all surprised that the ball went into right field. That's what happens when it's their day. After that, he couldn't find the plate."

After Goldschmidt took second on a wild pitch, Miguel Montero and Cody Ross walked to load the bases.

Sept. 19: Indians right fielder Matt Carson (center) is swarmed on the infield after hitting a game-winning single in the eleventh inning against the Astros at Progressive Field.
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Sept. 19: Members of the Rockies celebrate with center fielder Corey Dickerson after he hit a walk off triple to win the game during the 15th inning against the Cardinals at Coors Field. The Rockies won 7-6 in 15 innings.
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Sep. 12: The Los Angeles Dodgers celebrate with first baseman Adrian Gonzalez (center) after he hit a walk-off single against the San Francisco Giants in tenth inning at Dodger Stadium.
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Sept. 10: Los Angeles Dodgers left fielder Scott Van Slyke is greeted at home plate after he hits a two-run walk-off home run against the Arizona Diamondbacks at Dodger Stadium.
Gary A. Vasquez, USA TODAY Sports

Sept. 8: Giants' Angel Pagan, second from left, celebrates with teammates, from left, Brandon Crawford, Hector Sanchez, Ehire Adrianza and Joaquin Arias after hitting a walk-off single against the Diamondbacks' in the 11th inning.
George Nikitin, AP

Sept. 4: Arizona Diamondbacks infielder Didi Gregorius drops dirt on the head of infielder Willie Bloomquist as they celebrate his walk off single against the Toronto Blue Jays.
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Philadelphia Phillies infielder Michael Young, left, is cheered by teammate Carlos Ruiz after making the game-winning run on a hit by Domonic Brown during the ninth inning of a baseball game to defeat the Colorado Rockies 5-4, Thursday, Aug. 22, 2013, in Philadelphia.
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Aug. 17: Tigers slugger Miguel Cabrera connects on a walk-off solo homer in the bottom of the ninth against the Royals in Detroit. Cabrera's blast, his 39th on the year, gave the Tigers a 6-5 win.
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Aug. 13: Diamondbacks' Paul Goldschmidt is dowsed with water by teammate Martin Prado as he runs toward home plate following his game-winning walk-off home run against the Orioles in the 11th inning.
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Aug. 11: Yankees center fielder Brett Gardner is mobbed at home plate by teammates after hitting a walk off home run against the Tigers at Yankee Stadium.
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Aug. 9: Los Angeles Dodgers celebrate after first baseman Adrian Gonzalez crossed the plate in the ninth inning of the game for the winning run against the Tampa Bay Rays.
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July 30: Alex Presley of the Pittsburgh Pirates is congratulated by Garrett Jones, above, and Neil Walker after a game-winning single in the eleventh inning against the St. Louis Cardinals.
Justin K. Aller, Getty Images

July 29: The San Diego Padres' Chris Denorfia is dumped with Powerade during an interview with reporter Kelly Crull following a walk-off home run against the Cincinnati Reds.
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July 28: Los Angeles Dodgers right fielder Yasiel Puig is greeted at home plate after he hits a walk-off solo home run in the eleventh inning against the Cincinnati Reds.
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July 28: Yankees left fielder Alfonso Soriano (center) is congratulated by teammates after hitting a game-winning single against the Tampa Bay Rays in the ninth inning on July 28.
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July 21: Boston Red Sox wait at home plate to congratulate first baseman Mike Napoli for his walk off home run against the New York Yankees during the eleventh inning at Fenway Park.
Mark L. Baer, USA TODAY Sports

Chicago White Sox first baseman Adam Dunn (32) celebrates with teammates after hitting a walk off home run to win the game during the ninth inning against the Baltimore Orioles on July 4.
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Reds center fielder Shin-Soo Choo (center) is congratulated by left fielder Chris Heisey (28) and second baseman Brandon Phillips (4) after hitting a game-winning single during the eleventh inning against the San Francisco Giants on July 3.
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Members of the Boston Red Sox wait at home plate for pinch hitter Jonny Gomes (5) after hitting a walk off home run during the ninth inning against the San Diego Padres on July 3.
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Pirates' Russell Martin, center, is greeted by teammates Jeanmar Gomez, left, and Josh Harrison after Martin drove in Gaby Sanchez with a pinch-hit in the 14th against the Brewers on June 30.
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June 26: Alex Gordon, center, gave the Royals a 4-3 win over the Braves in 10 innings with a game-winning RBI single. Gordon started the game with a leadoff home run in the first.
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June 25: Yankees outfielder Ichiro Suzuki celebrates his game-winning home run with teammates in the bottom of the ninth inning against the Texas Rangers at Yankee Stadium.
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Jun 23: Seattle Mariners designated hitter Kendrys Morales (8) is mobbed by his teammates after hitting the game-winning three-run home run against the Oakland Athletics during the 10th inning at Safeco Field.
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June 22: The Philadelphia Phillies' Freddy Galvis gives Kevin Frandsen a kick in the behind as he crosses home plate after a walk-off home run against the New York Mets.
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June 22: San Francisco Giants catcher Hector Sanchez celebrates with teammates after hitting a game-winning RBI single against the Miami Marlins in the 11th inning at AT,T Park.
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June 19: Brandon Phillips gives the Reds a 2-1 win over the Pirates with an RBI single in the 13th inning. In the ninth, the Reds sent the game to extra innings with a run off Pirates closer Jason Grilli, who blows his first save of the season.
Frank Victores, USA TODAY Sports

June 18: Arizona Diamondbacks first baseman Paul Goldschmidt is swarmed by teammates in celebration after hitting a walk off home run to beat the Miami Marlins 3-2 at Chase Field.
Matt Kartozian, USA TODAY Sports

June 18: Boston Red Sox's Jonny Gomes celebrates at home plate after hitting the game-winning two-run home run in the ninth inning against the Tampa Bay Rays in Game 2 of a doubleheader.
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June 17: Atlanta Braves first baseman Freddie Freeman celebrates a walk-off two-run home run with teammates in the ninth inning against the New York Mets at Turner Field.
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June 13: Athletics' Nate Freiman, second from right, is mobbed by his teammates after hitting the game-winning RBI single off Yankees pitcher Mariano Rivera in the 18th inning. Oakland won 3-2.
Eric Risberg, AP

June 8: Rajai Davis of the Toronto Blue Jays is mobbed by teammates after driving in the winning run in the 18th inning against the Texas Rangers at Rogers Centre in Toronto, Ontario, Canada.
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May 27: Brandon Barnes of the Houston Astros, right, is mobbed by his teammates after his RBI double in the 12th inning to defeat the Colorado Rockies at Minute Maid Park in Houston.
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Bruce hit a pair of home runs and drove in all three runs for Cincinnati.

"He's been hitting the ball a ton," Baker said. "He's been most of our offense. We need some other guys to join forces."

The Reds seemed headed for a crushing loss when Bruce came up in the ninth against closer Heath Bell. Brandon Phillips was on first after a nine-pitch walk. Bruce worked the count to 3-2, then launched one to right-center. It landed high above the 413-foot mark – nearly the exact same place as where Bruce hit one in the second.

Leake went eight innings and allowed two runs on four hits. He walked one and struck out one. Leake continued on his incredible roll. He is 5-1 with a 1.31 ERA over his last eight starts.

Leake only threw 92 pitches, but Baker never considered him for the ninth.

"You can go back and say he should have finished it," Baker said. "But, if he gives it up, you look back and say you should have used Chapman. That's Chapman's job."

Arizona starter Patrick Corbin got ahead of Bruce 0-2 to start the second inning. Bruce hit the next pitch out to right-center. It landed on the concourse about 25 feet above the 413 mark. It was estimated at 472 feet, the longest home run of year at Chase.

Bruce became only the second Red to hit a home run on an 0-2 pitch this year. Shin-Soo Choo did against Atlanta.

The home run was the only hit by either side through five innings.

Leake retired the first 17 he faced on only 59 pitches. Corbin broke up the perfect game by slicing a double into left field. Derrick Robinson came close to catching it. Corbin came into the at-bat hitting 3-for-32 on the year.

Two pitches later, Parra hit one out to right-center to give the Diamondbacks a 2-1 lead. It was Parra's seventh of the year and second in as many nights.

"I was (aware of the perfect game)," Leake said. "I wasn't thinking about it enough to affect anything."

Other than Bruce's blast, the Reds didn't much more against Corbin. Corbin, 23, came in 9-0 with a 2.28 ERA. He looked the part. Bruce's hit was the only one for the Reds through six.

The Reds finally put together a threat in the seventh. Todd Frazier walked with one out. Devin Mesoraco followed with a single to center. But Zack Cozart hit into a 4-6-3 double play.

The Reds had a great chance to tie it in the eighth. Robinson tripled with one out. But Corbin came back to strike out Choo in three pitches. Votto put up a better battle, but he struck out as well, albeit on on eight pitches.

Corbin went eight innings and allowed the one run on three hits. He walked four and struck out five. He became the first pitcher to get past the seventh against the Reds since Jaime Garcia did it on April 30.

But Bruce bailed them out with his second homer of the day. It was Bruce's 18th of year, fifth in four games and eighth in nine games.